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| Rev | Author | Line No. | Line |
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| 867 | jermar | 1 | /* |
| 2 | * Copyright (C) 2005 Martin Decky |
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| 3 | * All rights reserved. |
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| 4 | * |
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| 5 | * Redistribution and use in source and binary forms, with or without |
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| 6 | * modification, are permitted provided that the following conditions |
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| 7 | * are met: |
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| 8 | * |
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| 9 | * - Redistributions of source code must retain the above copyright |
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| 10 | * notice, this list of conditions and the following disclaimer. |
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| 11 | * - Redistributions in binary form must reproduce the above copyright |
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| 12 | * notice, this list of conditions and the following disclaimer in the |
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| 13 | * documentation and/or other materials provided with the distribution. |
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| 14 | * - The name of the author may not be used to endorse or promote products |
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| 15 | * derived from this software without specific prior written permission. |
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| 16 | * |
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 27 | */ |
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| 28 | |||
| 29 | #include <genarch/ofw/memory_init.h> |
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| 30 | #include <genarch/ofw/ofw.h> |
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| 31 | #include <panic.h> |
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| 32 | #include <mm/frame.h> |
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| 33 | #include <align.h> |
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| 34 | #include <arch/types.h> |
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| 35 | #include <typedefs.h> |
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| 36 | |||
| 37 | #define MEMMAP_MAX_RECORDS 32 |
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| 38 | |||
| 39 | typedef struct { |
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| 40 | __address start; |
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| 41 | size_t size; |
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| 42 | } memmap_t; |
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| 43 | |||
| 44 | static memmap_t memmap[MEMMAP_MAX_RECORDS]; |
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| 45 | size_t total_mem = 0; |
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| 46 | |||
| 47 | void ofw_init_memmap(void) |
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| 48 | { |
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| 49 | int i; |
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| 50 | int ret; |
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| 51 | |||
| 52 | phandle handle = ofw_find_device("/memory"); |
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| 53 | if (handle == -1) |
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| 54 | panic("No RAM\n"); |
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| 55 | |||
| 56 | ret = ofw_get_property(handle, "reg", &memmap, sizeof(memmap)); |
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| 57 | if (ret == -1) |
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| 58 | panic("Device /memory has no reg property\n"); |
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| 59 | |||
| 60 | |||
| 61 | for (i = 0; i < MEMMAP_MAX_RECORDS; i++) { |
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| 62 | if (memmap[i].size == 0) |
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| 63 | break; |
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| 64 | total_mem += memmap[i].size; |
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| 65 | } |
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| 66 | } |
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| 67 | |||
| 68 | size_t ofw_get_memory_size(void) |
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| 69 | { |
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| 70 | return total_mem; |
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| 71 | } |
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| 72 | |||
| 73 | void ofw_init_zones(void) |
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| 74 | { |
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| 75 | int i; |
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| 76 | pfn_t confdata; |
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| 77 | |||
| 78 | for (i = 0; i < MEMMAP_MAX_RECORDS; i++) { |
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| 79 | if (memmap[i].size == 0) |
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| 80 | break; |
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| 81 | confdata = ADDR2PFN(memmap[i].start); |
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| 82 | if (confdata == 0) |
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| 83 | confdata = 2; |
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| 84 | zone_create(ADDR2PFN(memmap[i].start), |
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| 85 | SIZE2FRAMES(ALIGN_DOWN(memmap[i].size,PAGE_SIZE)), |
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| 86 | confdata, 0); |
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| 87 | } |
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| 88 | } |